1. Division of Endocrinology, Diabetes, and Clinical Nutrition (K.C.J.Y., C.T.R., B.J.K., J.Q.P.), Portland, Oregon 97239
2. Oregon National Primate Research Center (C.T.R.), Beaverton, Oregon 97006
3. Institute of Clinical Medicine N (J.F.), Aarhus University, DK-8000 Aarhus, Denmark
4. Department of Medicine, and Advanced Imaging Research Center (W.D.R., J.R.P.), Oregon Health and Science University, Portland, Oregon 97239